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oci_new_cursor

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_new_cursorAlloue et retourne un nouveau curseur Oracle

Description

oci_new_cursor(resource $connection): resource|false

Alloue un nouveau curseur Oracle sur la connexion spécifiée.

Liste de paramètres

connection

Un identifiant de connexion Oracle, retourné par la fonction oci_connect() ou la fonction oci_pconnect().

Valeurs de retour

Retourne un nouveau gestionnaire de connexion, ou false si une erreur survient.

Exemples

Exemple #1 Utiliser un REF CURSOR issu d'une procédure enregistrée

<?php
// Prérequis :
// crée ou remplace la procédure myproc(myrc out sys_refcursor) comme ceci
// begin
// open myrc for select first_name from employees;
// end;

$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!
$conn) {
$m = oci_error();
trigger_error(htmlentities($m['message']), E_USER_ERROR);
}

$curs = oci_new_cursor($conn);
$stid = oci_parse($conn, "begin myproc(:cursbv); end;");
oci_bind_by_name($stid, ":cursbv", $curs, -1, OCI_B_CURSOR);
oci_execute($stid);

oci_execute($curs); // Execute the REF CURSOR like a normal statement id
while (($row = oci_fetch_array($curs, OCI_ASSOC+OCI_RETURN_NULLS)) != false) {
echo
$row['FIRST_NAME'] . "<br />\n";
}

oci_free_statement($stid);
oci_free_statement($curs);
oci_close($conn);
?>

add a note

User Contributed Notes 3 notes

up
10
mgumiel at mgait dot com
11 years ago
Some packages in oracle are functions, and that functions returns a cursor.

For example:

CREATE FUNCTION F_Function( p1 char(2), p2 int)
RETURN SYS_REFCURSOR
AS
my_cursor SYS_REFCURSOR;
BEGIN
OPEN my_cursor FOR SELECT * FROM allitems
WHERE (cod=p1)
AND (Number=p2);
RETURN my_cursor;
END F_Function;

Here is the code that allows to obtain data from a function that returns a cursor.

<pre>
<?php
$conn
=oci_connect("server", "user", "pass");
if (!
$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message']), E_USER_ERROR);
}

//You must asign before.
$p1 = '03';
$p2 = 2012016191;

$stid = oci_parse($conn, 'begin :cursor := server.PKG_package.F_Function(:p1,:p2); end;');
$p_cursor = oci_new_cursor($conn);

//Send parameters variable value lenght
oci_bind_by_name($stid, ':p1', $p1,2);
oci_bind_by_name($stid, ':p2', $p2,10);

//Bind Cursor put -1
oci_bind_by_name($stid, ':cursor', $p_cursor, -1, OCI_B_CURSOR);

// Execute Statement
oci_execute($stid);
oci_execute($p_cursor, OCI_DEFAULT);

oci_fetch_all($p_cursor, $cursor, null, null, OCI_FETCHSTATEMENT_BY_ROW);
echo
'<br>';
print_r($cursor);
?>
up
-3
sixd at php dot net
14 years ago
Oracle 11.2 introduced support for REF CURSOR prefetching
up
-4
sixd at php dot net
15 years ago
Because OCI8 uses "prefetching" to greatly improve returning query results, but Oracle doesn't support prefetching for REF CURSORs, application performance using REF CURSORs can be greatly improved by writing a PL/SQL function that pulls data from the REF CURSOR and PIPEs the output. The new function can be queried in a SELECT as if it were a table. See http://blogs.oracle.com/opal/2008/11/
converting_ref_cursor_to_pipe.html
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